Optimization of Multiple Tuned Mass Dampers for Road Bridges Taking into Account Bridge-Vehicle Interaction, Random Pavement Roughness, and Uncertainties

Table 3

Results obtained with the GA.

Scenario	TMD mass (kg)	TMD optimized parameters k (N/m); c (Ns/m)	Maximum vertical displacement (mm)	Dynamic amplification factor
1	mtmd1 = 4498.2	ktmd1 = 24461515.78	0.3242	1.035
		ctmd1 = 55.5349
2	mtmd1 = 2249.1	ktmd1 = 13073406.38	0.3358	1.072
		ctmd1 = 31.9801
	mtmd2 = 2249.1	ktmd2 = 12001929.32
		ctmd2 = 22.1855
3	mtmd1 = 1499.4	ktmd1 = 7990745.97	0.3326	1.062
		ctmd1 = 16.6866
	mtmd2 = 1499.4	ktmd2 = 8846387.21
		ctmd2 = 17.3647
	mtmd3 = 1499.4	ktmd3 = 8109517.58
		ctmd3 = 51.1554